<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        #d1{
            background-color: pink;
            height: 100px;
            width: 100px;
        }
    </style>
</head>
<body>

<div id="d1"></div>
<div class="c1">
    div1
</div>
<div class="c1">
    div2
</div>
<a href="">百度</a>

<div id="d3">
    <div class="c3">
        <h1>太白洗头</h1>
    </div>
</div>


<script src="jquery.js"></script>
<script>


</script>
</body>
</html>